/* Copyright (c) 2006 by M Aamir Maniar 
 * 
 * Permission is hereby granted, free of charge, to any person obtaining 
 * a copy of this software and associated documentation files (the 
 * "Software"), to deal in the Software without restriction, including 
 * without limitation the rights to use, copy, modify, merge, publish, 
 * distribute, sublicense, and/or sell copies of the Software, and to 
 * permit persons to whom the Software is furnished to do so, subject to 
 * the following conditions:
 * 
 * The above copyright notice and this permission notice shall be 
 * included in all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 * 
 * */

namespace Generic.Utils
{
    using System;
    using System.Collections.Generic;
    using System.Text;


    public class ObjectComparer
    {
        public static int? TryCompareTo<T>(T x, T y)
        {
            if (x is IComparable)
            {
                return ((IComparable)x).CompareTo(y);
            }
            if (x is IComparable<T>)
            {
                return ((IComparable<T>)x).CompareTo(y);
            }
            return null;
        }

        #region public static int CompareTo<T>(T x, T y) where T: IComparable

        /// <summary>
        /// Compares to objects.
        /// </summary>
        /// <param name="other">The other.</param>
        /// <returns></returns>
        public static int CompareTo<T>(T x, T y) where T: IComparable<T>
        {
            return x.CompareTo(y);
        }
        #endregion

        public static int CompareTo<T>(T x, T y, IComparer<T> comparer)
        {
            return comparer.Compare(x, y);
        }

        public static int CompareTo<T>(T x, T y, Comparison<T> comparison)
        {
            return comparison(x, y);
        }
    }
}
